Electro-optical device, method for manufacturing electro-optical device, and electronic apparatus

ABSTRACT

There is provided an electro-optical device including a light-emitting layer that has a first light-emitting element and a second light-emitting element which are adjacent to each other and a color filter layer that has a first color filter provided corresponding to the first light-emitting element and a second color filter provided corresponding to the second light-emitting element, in which an inter-element distance between the first light-emitting element and the second light-emitting element is 1.5 μm or less, and a thickness of layer between the light-emitting layer and the color filter layer is 6 times or less the inter-element distance.

CROSS REFERENCE TO RELATE APPLICATION

This application is a continuation of U.S. application Ser. No.15/812,289, filed Nov. 14, 2017, the contents of which are incorporatedherein by reference.

BACKGROUND 1. Technical Field

The present invention relates to an electro-optical device, a method formanufacturing an electro-optical device, and an electronic apparatus.

2. Related Art

In an electro-optical device including a light-emitting element such asan organic electro luminescent (EL) element, in order to realize colordisplay, a configuration is known in which a color filter that transmitslight in a desired wavelength region is provided on a sealing layer thatcovers the light-emitting element. For example, in JP-A-2010-237384 andJP-A-2004-227851, a configuration is disclosed, in which a red colorfilter that transmits red light, a green color filter that transmitsgreen light, and a blue color filter that transmits blue light aredisposed on a sealing layer that covers a light-emitting element.

In recent years, a pitch of a pixel provided in an electro-opticaldevice is becoming narrower, and for example, an electro-optical devicehaving a narrow pitch of a pixel, for example, the pitch of the pixelthat is 10 μm or less, has been developed. As the pitch of the pixelbecomes narrower, the interval between light-emitting elements becomesnarrower and the width of a color filter provided corresponding to eachlight-emitting element also becomes narrower. For this reason, as thepitch of the pixel becomes narrower, a maximum value of an angle formedby a traveling direction of the light transmitting the color filterprovided corresponding to the light-emitting element among the lightemitted from the light-emitting element and a direction perpendicular tothe color filter becomes small, resulting in a problem that a viewingangle of the electro-optical device becomes narrower.

SUMMARY

An advantage of some aspects of the invention is to provide a techniquecapable of securing a sufficient viewing angle even when the pitch ofthe pixel becomes narrower.

According to an aspect of the invention, there is provided anelectro-optical device including a light-emitting layer that has a firstlight-emitting element and a second light-emitting element which areadjacent to each other and a color filter layer that has a first colorfilter provided corresponding to the first light-emitting element and asecond color filter provided corresponding to the second light-emittingelement, in which an inter-element distance between the firstlight-emitting element and the second light-emitting element is 1.5 μmor less, and a thickness of layer between the light-emitting layer andthe color filter layer is 6 times or less the inter-element distance.

According to the aspect of the invention, even in a case where theinterval between the light-emitting elements is narrowed to 1.5 μm orless, since the interval between the light-emitting element and thecolor filter layer is narrowed to 6 times or less the inter-elementdistance, it is possible to maintain good viewing angle characteristicsas compared with the case where the interval between the light-emittingelement and the color filter layer is larger than 6 times theinter-element distance.

The above-described electro-optical device includes a first resonatorthat has a first light-emitting element and enhances the intensity oflight in a first wavelength region, and a second resonator that has asecond light-emitting element and enhances the intensity of light in asecond wavelength region, in which the first color filter may transmitlight from the first resonator, and the second color filter may transmitlight from the second resonator.

According to this aspect, since the light in the first wavelength regionis incident on the first color filter and the light in the secondwavelength region is incident on the second color filter, it is possibleto increase the color purity of display in the electron optical deviceas compared with the case where the light in all wavelength regions ofvisible light is incident on the first color filter and the second colorfilter.

The above-described electro-optical device includes a filling layer thatcovers the color filter layer and a protective substrate that covers thefilling layer, in which a maximum value of an angle that is formed by atraveling direction of the light emitted from the first light-emittingelement and transmitted through the protective substrate aftertransmitting through the first color filter and the filling layer, and adirection perpendicular to the protective substrate is 10 degrees ormore.

According to this aspect, since it is possible to secure a viewing angleof 10 degrees or more, the convenience of a user of the electro-opticaldevice may be improved as compared with the case where only the viewingangle less than 10 degrees may be secured.

The above-described electro-optical device includes a filling layer thatcovers the color filter layer, and a thickness of layer between thelight-emitting layer and the filling layer is 9 times or less theinter-element distance.

According to this aspect, since the interval between the light-emittingelement and the filling layer is narrowed to 9 times or less theinter-clement distance, it is possible to maintain good viewing anglecharacteristics as compared with the case where the interval between thelight-emitting element and the filling layer is larger than 9 times theinter-element distance.

In the electro-optical device described above, the second color filtermay be formed on a part of the first color filter, and the lighttransmitted through the first color filter may have higher visibilitythan the light transmitted through the second color filter.

Since the light transmitted through the first color filter has highervisibility than the light transmitted through the second color filter,the possibility that peeling-off of the first color filter is visuallyrecognized as a color change is higher than the possibility thatpeeling-off of the second color filter is visually recognized as a colorchange. On the other hand, according to this aspect, since at least apart of the first color filter is protected by the second color filter,it is possible to reduce the possibility that the first color filterpeels off. Therefore, according to this aspect, it is possible to reducethe possibility that the color change due to peeling-off of the colorfilter is visually recognized.

The above-described electro-optical device includes a sealing layer thatis formed between the light-emitting layer and the color filter layer;and a convex portion that is formed between the first color filter andthe second color filter, that is between the sealing layer and the colorfilter layer.

According to this aspect, since the convex portion is provided between aposition where the first color filter is to be formed and a positionwhere the second color filter is to be formed, it is possible to reducethe possibility that the second color filter is erroneously formed atthe position where the first color filter is to be formed, and the firstcolor filter is erroneously formed at the position where the secondcolor filter is to be formed. In this way, it is possible to suppressthe possibility that the display quality of the electro-optical deviceis degraded due to a manufacturing error.

In addition, according to another aspect of the invention, there isprovided a method for manufacturing electro-optical device including:forming a light-emitting layer that has a first light-emitting elementand a second light-emitting element which are adjacent to each other,forming a color filter layer that has a first color filter correspondingto the first light-emitting element and a second color filtercorresponding to the second light-emitting element, in which aninter-element distance between the first light-emitting element and thesecond light-emitting clement is 1.5 μm or less, and a thickness oflayer between the light-emitting layer and the color filter layer is 6times or less the inter-element distance.

According to the aspect of the invention, even in a case where theinterval between the light-emitting elements is narrowed to 1.5 μm orless, since the interval between the light-emitting element and thecolor filter layer is narrowed to 6 times or less the inter-elementdistance, it is possible to maintain good viewing angle characteristicsas compared with the case where the interval between the light-emittingelement and the color filter layer is larger than 6 times theinter-element distance.

Furthermore, in addition to the electro-optical device, the inventionmay be conceived as an electronic apparatus equipped with theelectro-optical device. Typical examples of the electronic apparatusinclude display devices such as a head mount display (HMD) and anelectronic viewfinder.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described with reference to the accompanyingdrawings, wherein like numbers reference like elements.

FIG. 1 is a block view showing an example of a configuration of anelectro-optical device according to an embodiment of the invention.

FIG. 2 is an equivalent circuit view showing an example of aconfiguration of a pixel.

FIG. 3 is a plan view showing an example of a configuration of a displayunit.

FIG. 4 is a partial cross-sectional view showing an example of theconfiguration of the display unit.

FIG. 5 is an explanatory view for explaining light emitted from alight-emitting element.

FIG. 6 is a flowchart showing an example of a manufacturing method forthe electro-optical device.

FIG. 7 is an explanatory view for explaining an example of themanufacturing method for the electro-optical device.

FIG. 8 is an explanatory view for explaining an example of themanufacturing method for the electro-optical device.

FIG. 9 is an explanatory view for explaining an example of themanufacturing method for the electro-optical device.

FIG. 10 is a plan view showing an example of a configuration of thedisplay unit according to a modification example.

FIG. 11 is a partial cross-sectional view showing an example of theconfiguration of the display unit according to the modification example.

FIG. 12 is a perspective view of a head mounted display according to theinvention.

FIG. 13 is a perspective view of a personal computer according to theinvention.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

Hereinafter, embodiments for carrying out the invention will bedescribed with reference to the drawings. However, in each view, thedimensions and the scale of each unit are appropriately different fromthe actual ones. In addition, since the embodiments described below arepreferred specific examples of the invention, various technicallypreferable limitations are given, but in the following description, thescope of the invention is not limited to these forms unless otherwisestated to limit the invention.

A. EMBODIMENT

Hereinafter, an electro-optical device 1 according to the presentembodiment will be described.

1. Outline of Electro-Optical Device

FIG. 1 is a block view showing an example of a configuration of theelectro-optical device 1 according to the embodiment.

As shown in FIG. 1, the electro-optical device 1 includes a displaypanel 10 having a plurality of pixels Px and a control circuit 20controlling the operation of the display panel 10.

Digital image data Video is supplied to the control circuit 20 from ahost device (not shown) synchronously with the synchronization signal.Here, the image data Video is digital data that defines a gradationlevel to be displayed by each pixel Px of the display panel 10. Inaddition, the synchronization signal is a signal including a verticalsynchronization signal, a horizontal synchronization signal, a dot clocksignal, and the like.

The control circuit 20 generates a control signal Ctr for controllingthe operation of the display panel 10 based on the synchronizationsignal and supplies the generated control signal Ctr to the displaypanel 10. In addition, the control circuit 20 generates an analog imagesignal Vid based on the image data Video and supplies the generatedimage signal Vid to the display panel 10. Here, the image signal Vid isa signal that defines the luminance of the light-emitting element of thepixel Px so that each pixel Px displays the gradation specified by theimage data Video.

As shown in FIG. 1, the display panel 10 includes M scanning lines 13extending in an X direction and data lines 14 of N columns extending ina Y direction, a display unit 12 having M×N pixels Px arranged in amatrix of M rows×N columns corresponding to the intersections of thescanning line 13 of M rows and the data line 14 of N columns, and adriving circuit 11 that drives the display unit 12 (M is a naturalnumber of 1 or more. N is a natural number of 3 or more).

Hereinafter, in order to distinguish the plurality of pixels Px, aplurality of scanning lines 13, and a plurality of data lines 14 fromeach other, from a +Y direction to a −Y direction, the rows are referredto as a first row, a second row, . . . , an M-th (Hereinafter, the +Ydirection and the −Y direction are collectively referred to as a “Y-axisdirection”), and from a −X direction to a +X direction, the columns arereferred to as a first column, a second column, . . . , an N-th column(Hereinafter, the +X direction and the −X direction are collectivelyreferred to as an “X-axis direction”).

The plurality of pixels Px provided on the display unit 12 include apixel PxR capable of displaying red (R), a pixel PxG capable ofdisplaying green (G), and a pixel PxB capable of displaying blue (B).Then, in the embodiment, a case where k is a variable representing anatural number of a multiple of 3 that satisfies 3≤k≤N, the pixel PxR isarranged in a (k−2)th column among the first column to the N-th column,the pixel PxG is arranged in the (k−1)th column, and the pixel PxB isarranged in the k-th column is assumed as an example.

As shown in FIG. 1, the driving circuit 11 includes a scanning linedriving circuit 111 and a data line driving circuit 112.

The scanning line driving circuit 111 sequentially scans (selects) thescanning lines 13 of the first row to the M-th row. Specifically, thescanning line driving circuit 111 sequentially selects the scanninglines 13 for each horizontal scanning period in units of one frame bysetting scanning signals GN[1] to Gw[M] to be output to the respectivescanning lines 13 of the first row to the M-th row to a predeterminedselection potential sequentially in each horizontal scanning period. Inother words, the scanning line driving circuit 111 selects the scanningline 1.3 of the m-th row in the m-th horizontal scanning period of oneframe period by setting the scanning signal Gw[m] to be output to thescanning line 13 of the m-th row to the predetermined selectionpotential (m is a natural number satisfying 1≤m≤M). The period of oneframe is a period during which the electro-optical device 1 displays oneimage.

Based on the image signal Vid and the control signal Ctr supplied fromthe control circuit 20, the data line driving circuit 112 generatesanalog data signals VC[1] to Vd[N] that define the gradation to bedisplayed by each pixel P and outputs the generated data signals Vd[1]to Vd[N] to the data lines 14 of N columns for each horizontal scanningperiod. In other words, in each horizontal scanning period, the dataline driving circuit 112 outputs a data signal Vd[n] (n is a naturalnumber satisfying 1≤n≤N) to the data line 14 of the n-th column.

In the embodiment, the image signal Vid output from the control circuit20 is an analog signal, but the image signal Vid output from the controlcircuit 20 may be a digital signal. In this case, the data line drivingcircuit 112 converts the image signal Vid to generate analog datasignals Vd[1] to Vd[N].

FIG. 2 is an equivalent circuit view showing an example of aconfiguration of a pixel circuit 100 provided corresponding to eachpixel Px in a one-to-one correspondence. In the embodiment, it isassumed that a plurality of pixel circuits 100 corresponding to theplurality of pixels Px are electrically identical to each other. In FIG.2, the pixel circuit 100 provided corresponding to the pixel Px in them-th row and the n-th column will be described by way of example.

The pixel circuit 100 includes a light-emitting element 3 included inthe pixel Px corresponding to the pixel circuit 100, a P-channel MOStype transistors 41 and 42, and a storage capacitor 43. One or both ofthe transistors 41 and 42 may be N-channel MOS type transistors. Inaddition, the transistors 41 and 42 may be thin film transistors orfield effect transistors.

The light-emitting element 3 includes a pixel electrode 31, alight-emitting function layer 32, and a counter electrode 33. The pixelelectrode 31 functions as an anode for supplying holes to thelight-emitting function layer 32. The counter electrode 33 iselectrically connected to a feeder line 16 set at a potential. Vet whichis a power source potential on the low potential side of the pixelcircuit 100 and functions as a cathode for supplying electrons to thelight-emitting function layer 32. Then, the holes supplied from thepixel electrode 31 and the electrons supplied from the counter electrode33 are coupled to the light-emitting function layer 32, and thelight-emitting function layer 32 emits white light.

As will be described later in detail, a red color filter 8R issuperimposed on the light-emitting element 3 (hereinafter, referred toas a light-emitting element 3R) of the pixel PxR, In t of the pixel PxG,a green color filter 8G is superimposed on the light-emitting element 3(hereinafter, referred to as a light-emitting element 3G), and a bluecolor filter 8B is superimposed on a light-emitting element 3(hereinafter, referred to as a light-emitting element 3B) included inthe pixel PxB. Therefore, full-color display is enabled by the pixelPxR, the pixel PxG, and the pixel PxB.

In the embodiment, the light-emitting element 3G is an example of a“first light-emitting element”, and the color filter 8G providedcorresponding to the light-emitting element 3G is an example of the a“first color filter”. In addition, one of the light-emitting elements 3Badjacent in the +X direction or the light-emitting elements 3R adjacentin the −X direction with the light-emitting element 3G which is thefirst light-emitting element is an example of a “second light-emittingelement”, and one of the color filters provided corresponding to thesecond light-emitting element, that is, one of the color filter 8B andthe color filter 8R is an example of a “second color filter”.

The gate of the transistor 41 is electrically connected to the scanningline 13 of the m-th row, one of the source and the drain is electricallyconnected to the data line 14 of the n-th column, and the other of thesource and the drain is electrically connected to the gate of thetransistor 42 and one of the two electrodes included in the storagecapacitor 43.

The gate of the transistor 42 is electrically connected to the other ofthe source or the drain of the transistor 41 and one electrode of thestorage capacitor 43, one of the source and the drain is electricallyconnected to a feeder line 15 set to a potential Vel which is a powersource potential on the high potential side of the pixel circuit 100,and the other of the source and the drain is electrically connected tothe pixel electrode 31.

In the storage capacitor 43, one of the two electrodes included in thestorage capacitor 43 is electrically connected to the other of thesource and the drain of the transistor 41 and the gate of the transistor42, and the other electrode of the two electrodes of the storagecapacitor 43 is electrically connected to the feeder line 15. Thestorage capacitor 43 functions as a storage capacitor for holding thepotential of the gate of the transistor 42.

When the scanning line driving circuit 111 sets the scanning signalGw[m] to a predetermined selection potential and selects the scanningline 13 of the m-th row, the transistor 41 provided in the pixel Px ofthe m-th row and the n-th column is turned on. Then, when the transistor41 is turned on, the data signal Vd[n] is supplied from the data line 14of the nth column to the gate of the transistor 42. In this case, thetransistor 42 supplies a current corresponding to the potential (to beprecise, a potential difference between the gate and the source) of thedata signal Vd[n] supplied to the gate to the light-emitting element 3.Then, the light-emitting element 3 emits light with luminancecorresponding to the magnitude of the current supplied from thetransistor 42, that is, luminance corresponding to the potential of thedata signal Vd[n].

Thereafter, in a case where the scanning line driving circuit 111releases the selection of the scanning line 13 of the m-th row and thetransistor 41 is turned off, the potential of the gate of the transistor42 is held by the storage capacitor 43. Therefore, even after thetransistor 41 is turned off, the light-emitting element 3 may emit lightwith luminance corresponding to the data signal Vd[n].

2. Configuration of Display Unit

Hereinafter, the configuration of the display unit 12 according to theembodiment will be described with reference to FIGS. 3 and 4.

FIG. 3 is a plan view showing an example of a schematic structure of thedisplay unit 12 according to the embodiment.

Specifically, FIG. 3 shows a case where a part of the display unit 12 isviewed in a plan view from a +Z direction (hereinafter, a +Z directionand a −Z direction are collectively referred to as a “Z axisdirection”), which is a direction in which the electro-optical device 1emits light. The Z axis direction is a direction crossing the X axisdirection and the Y axis direction.

As shown in FIG. 3, on the M light-emitting elements 3G (+Z direction)included in the M pixels PxG arranged in the Y axis direction in the(k−1)th column of the display unit 12, the green color filter 8G isdisposed so as to cover the M light-emitting elements 3G. The colorfilter 8G transmits light with the maximum luminance of green light, forexample, light having a wavelength of 540 nm. In addition, on the Mlight-emitting elements 3B (+Z direction) included in the M pixels PxBarranged in the Y axis direction in the k-th column of the display unit12, the blue color filter 8B is disposed so as to cover the Mtight-emitting elements 3B. The color filter 813 transmits light withthe maximum luminance of blue light, for example, light having awavelength of 470 nm. In addition, on the M light-emitting elements 3R(+Z direction) included in the M pixels PxR arranged in the Y axisdirection in the (k−2)th column of the display unit 12, the red colorfilter 8R is disposed so as to cover the M light-emitting elements 3R.The color filter 8R transmits light with the maximum luminance of redlight, for example, light having a wavelength of 610 nm.

The green light transmitting through the color filter 8G which is anexample of the first color filter is an example of “light in a firstwavelength region”. In addition, the light transmitted through the colorfilter 8B or the color filter 8R as an example of the second colorfilter, that is, one of the blue light and the red light is an exampleof “the light in a second wavelength region”. That is, in theembodiment, the light in the first wavelength region has highervisibility than the light in the second wavelength region.

FIG. 4 is an example of a partial cross-sectional view taken along aline IV-IV in FIG. 3 of the display unit 12, in which a cross section ofthe pixel PxR, a cross section of the pixel PxG, and a cross section ofthe pixel PxB are included.

As shown in FIG. 4, the display unit 12 includes an element substrate 5,a protective substrate 9, and an adhesive layer 90 (an example of a“filling layer”) provided between the element substrate 5 and theprotective substrate 9. In the embodiment, it is assumed that theelectro-optical device 1 is a top emission type in which light isemitted from the protective substrate 9 side (+Z side).

The adhesive layer 90 is a transparent resin layer for bonding theelement substrate 5 and the protective substrate 9. The adhesive layer90 is formed using a transparent resin material such as an epoxy resinor an acrylic resin, for example.

The protective substrate 9 is a transparent substrate disposed on the +Zside of the adhesive layer 90. As the protective substrate 9, forexample, a quartz substrate, a glass substrate or the like may beadopted.

The element substrate 5 includes a substrate 50, a reflective layer 51,a distance adjusting layer 52, a light-emitting layer 30, a sealinglayer 60, and a color filter layer 8 stacked on the substrate 50.Although details will be described later, the light-emitting layer 30includes the light-emitting element 3 (3R, 3G, and 3B) described above.The light-emitting element 3 emits light in the +Z, direction and the −Zdirection. In addition, the color filter layer 8 includes the colorfilter 8R, the color filter 8G, and the color filter 8B described above.

The substrate 50 is a substrate on which various wirings such as thescanning line 13 and the data line 14, and various circuits such as thedriving circuit 11 and the pixel circuit 100 are mounted. The substrate50 may be any substrate as long as various wirings and various circuitsmay be mounted. As the substrate 50, for example, a silicon substrate, aquartz substrate, a glass substrate, or the like may be adopted. On the+Z side of the substrate 50, a reflective layer 51 is stacked.

The reflective layer 51 is a constituent element for reflecting thelight emitted from the light-emitting element 3 of the light-emittinglayer 30 to the +Z direction side. The reflective layer 51 is formedusing a material with high reflectance, for example, aluminum, silver orthe like. On the +Z side of the reflective layer 51, the distanceadjusting layer 52 is stacked.

The distance adjusting layer 52 is an insulating transparent layer foradjusting the optical distance between the light-emitting element 3 andthe reflective layer 51 of the light-emitting layer 30. The distanceadjusting layer 52 is formed using an insulating transparent material,for example, silicon oxide (SiOx) or the like. On the +Z side of thedistance adjusting layer 52, the light-emitting layer 30 is laminated.

The light-emitting layer 30 includes the pixel electrode 31 stacked onthe distance adjusting layer 52, an insulating film 34 stacked on thedistance adjusting layer 52 and the pixel electrode 31, thelight-emitting function layer 32 stacked so as to cover the pixelelectrode 31 and the insulating film 34, and the counter electrode 33stacked on the light-emitting function layer 32.

The pixel electrode 31 is a transparent layer having conductivity formedin an island shape individually for each pixel Px. The pixel electrode31 is formed using a conductive transparent material, for example,indium tin oxide (ITO), indium zinc oxide (IZO), or the like.

The insulating film 34 is an insulating constituent element arranged soas to cover the peripheral portion of each pixel electrode 31. Theinsulating film 34 is formed using an insulating material, for example,silicon oxide or the like.

The counter electrode 33 is a conductive constituent element havingoptical transparency and light reflectivity disposed so as to straddlethe plurality of pixels Px. The counter electrode 33 is formed using,for example, an alloy of Mg and Ag or the like.

The light-emitting function layer 32 includes a hole injecting layer, ahole transporting layer, an organic light-emitting layer, and anelectron transporting layer and is disposed so as to extend over aplurality of pixels Px. As described above, in the light-emittingfunction layer 32, holes are supplied from a portion of the pixelelectrode 31 that is not covered with the insulating film 34 and emitswhite light. That is, in the plan view, the portion of thelight-emitting layer 30 where the pixel electrode 31 is not covered withthe insulating film 34 corresponds to the light-emitting element 3. Inother words, the insulating film 34 functions as a “partition portion”that partitions the two light-emitting elements 3 adjacent to eachother.

In addition, in the embodiment, in the plan view, the portion where thelight-emitting element 3 is provided is regarded as the pixel Px. Inother words, in the plan view, the insulating film 34 is disposed so asto partition the plurality of pixels Px of the display unit 12 from eachother. The white light emitted from the light-emitting element 3 islight including red light, green light, and blue light.

In the embodiment, the film thickness of the distance adjusting layer 52is adjusted so that an optical resonance structure is formed by thereflective layer 51 and the counter electrode 33. Then, the lightemitted from the light-emitting function layer 32 is repeatedlyreflected between the reflective layer 51 and the counter electrode 33to strengthen the intensity of light having a wavelength correspondingto the optical distance between the reflective layer 51 and the counterelectrode 33, and the intensified light is emitted to the +Z side to theprotective substrate 9 via the counter electrode 33.

In the embodiment, as an example, the film thickness of the distanceadjusting layer 52 is set for each pixel Px so that the intensity oflight having a wavelength of 610 nm is intensified in the pixel PxR, theintensity of light having a wavelength of 540 nm is intensified in thepixel PxG, and the intensity of light having a wavelength of 470 nm isstrengthened in the pixel PxB. For this reason, in the embodiment, redlight with the maximum luminance of light having the wavelength of 610nm is emitted from the pixel PxR, green light with the maximum luminanceof light having the wavelength of 540 nm is emitted from the pixel PxG,and blue light with the maximum luminance of the light having thewavelength of 470 nm is emitted from the pixel PxB.

An optical resonance structure provided in the pixel PxG, that is, anoptical resonance structure including the light-emitting element 3G, thereflective layer 51, and the distance adjusting layer 52 is referred toas a resonance structure 35G. The resonance structure 35G is an exampleof a “first resonator” including the first light-emitting element andenhancing the light intensity of the first wavelength region. Inaddition, an optical resonance structure provided in the pixel PxB, thatis, an optical resonance structure including the light-emitting element3B, the reflective layer 51, and the distance adjusting layer 52 isreferred to as a resonance structure 35B. In addition, an opticalresonance structure provided in the pixel PxR, that is, an opticalresonance structure including the light-emitting element 3R, thereflective layer 51, and the distance adjusting layer 52 is referred toas a resonance structure 35R. One of the resonance structure 35B and theresonance structure 35R is an example of a “second resonator” includingthe second light-emitting element and enhancing the light intensity ofthe second wavelength region.

The sealing layer 60 includes a lower sealing layer 61 stacked on thecounter electrode 33, a planarizing layer 62 stacked on the lowersealing layer 61, and an upper sealing layer 63 stacked on theplanarizing layer 62.

The lower sealing layer 61 and the upper sealing layer 63 aretransparent layers having insulating properties and disposed so as toextend over the plurality of pixels Px. The lower sealing layer 61 andthe upper sealing layer 63 are constituent elements for inhibiting entryof moisture, oxygen, or the like into the light-emitting layer 30 andare formed using an inorganic material such as silicon oxide (SiOx),silicon nitride (SiNx), or aluminum oxide (AlxOy), for example.

The planarizing layer 62 is a transparent layer disposed so as tostraddle the plurality of pixels and is a constituent element forproviding a flat upper surface (a surface on the +Z side). Theplanarizing layer 62 is formed using, for example, a resin material suchas an epoxy resin, an acrylic resin, a urethane resin, a silicon resin,or an inorganic material such as silicon oxide.

The color filter layer 8 includes the color filter 8R, the color filter8G, and the color filter 8B.

As shown in FIG. 4, the color filter 8G is formed on the upper sealinglayer 63 so as to cover the light-emitting element 3G in a plan view onthe +Z side of the light-emitting element 3G. In addition, the colorfilter 8B is formed on the upper sealing layer 63 and the color filter8G so as to cover the light-emitting element 3B in a plan view on the +Zside of the light-emitting element 3B. In addition. the color filter 8Ris formed on the upper sealing layer 63, the color filter 8G, and thecolor filter 8R so as to cover the light-emitting element 3R in a planview on the +Z side of the light-emitting element 3R.

The color filter 8R is formed of a photosensitive resin materialcontaining a red coloring material, the color filter 8G is formed of aphotosensitive resin material containing a green coloring material, andthe color filter 8B is formed of a photosensitive resin materialcontaining a blue coloring material.

As shown in FIG. 4, the adhesive layer 90 is provided on the +Z side ofthe color filter layer 8 so as to cover the color filter layer 8, andthe protective substrate 9 is provided on the +Z side of the adhesivelayer 90.

3. Thickness of Sealing Layer and Color Filter Layer and TravelingDirection of Light

Hereinafter, the relationship between the traveling direction of thelight emitted from the light-emitting element 3 and the interval betweenthe color filter layer 8 and the light-emitting element 3 will bedescribed with reference to FIG. 5.

FIG. 5 is a view showing a portion including a cross section of thepixel PxR and a cross section of the pixel PxG in the partialcross-sectional view shown in FIG. 4.

Hereinafter, the thickness in the Z axis direction of the sealing layer60 included in each pixel Px is referred to as a thickness Za. Then,when it is necessary to distinguish by RGB, the thickness Zacorresponding to the pixel PxR is referred to as a thickness ZaR, thethickness Za corresponding to the pixel PxG is referred to as athickness ZaG, the thickness Za corresponding to the pixel PxB isreferred to as a thickness ZaB.

In addition, hereinafter, the maximum value of the thickness in the Zaxis direction of the color filter included in each pixel Px is referredto as a thickness Zc. Then, when it is necessary to distinguish by RGB,the thickness Zc corresponding to the pixel PxR is referred to as athickness ZcR, the thickness Zc corresponding to the pixel PxG isreferred to as a thickness ZcG, the thickness Za corresponding to thepixel PxB is referred to as a thickness ZcB.

In addition, hereinafter, the sum of the thickness Za and the thicknessZc corresponding to each pixel Px is referred to as a thickness Zt.Then, when it is necessary to distinguish by RGB, the thickness Ztcorresponding to the pixel PxR is referred to as a thickness ZtR, thethickness Zt corresponding to the pixel PxG is referred to as athickness ZtG, the thickness Zt corresponding to the pixel PxB isreferred to as a thickness ZtB.

In addition, hereinafter, the interval between two light-emittingelements 3 adjacent to each other is referred to as an interval Xw (anexample of “inter-element distance”). Then, when it is necessary todistinguish by RGB, the interval Xw between adjacent light-emittingelements 3R and 3G is referred to as an interval XwRG, the interval Xwbetween adjacent light-emitting elements 3G and 3B is referred to as aninterval XwGB, and the interval Xw between the light-emitting elements3B and 3R is referred to as an interval XwBR.

In addition, hereinafter, the light spreading in the +X direction mostamong the light emitted from the +X side end portion of thelight-emitting element 3 included in each pixel Px and transmittingthrough the color filter and the protective substrate 9 included thepixel Px, or the light spreading in the direction among the lightemitted from the −X side end portion of the light-emitting element 3included in each pixel Px and transmitting through the color filter andthe protective substrate 9 included in the pixel Px is referred to aslight Lx. Then, When it is necessary to distinguish by RGB, the light Lxcorresponding to the pixel PxR is referred to as light LxR, the light Lxcorresponding to the pixel PxG is referred to as light LxG, and thelight Lx corresponding to the pixel PxB is referred to as light LxB.

In addition, hereinafter, when the light Lx emitted from each pixel Pxreaches a position away from the light-emitting element 3 of the pixelPx by the thickness Za in the Z axis direction, the width in the X axisdirection between the position and the light-emitting element 3 isreferred to as a width Xa. Then, when it is necessary to distinguish byRGB, the width Xa corresponding to the pixel PxR is referred to as awidth XaR, the width Xa corresponding to the pixel PxG is referred to asa width XaG, and the width Xa corresponding to the pixel PxB is referredto as a width XaB.

In addition, hereinafter, the angle formed between the light Lx emittedfrom the light-emitting element 3 and the Z axis direction is referredto as an angle θa, and the angle formed between the light Lx and theZ-axis direction after transmitting through the protective substrate 9is referred to as an angle θo. Then, when it is necessary to distinguishby RGB, the angle θa and the angle θo corresponding to the pixel PxR arerespectively referred to as an angle θaR and an angle θoR, the angle θaand the angle θo corresponding to the pixel PxG are respectivelyreferred to as an angle θaG and an angle θoG, and the angle θa and theangle θo corresponding to the pixel PxB are respectively referred to asan angle θaB and an angle θoB.

The electro-optical device 1 according to the embodiment ischaracterized by satisfying the following two conditions.

-   Condition 1: the interval Xw between two adjacent light-emitting    elements 3 is 15 μm or less.-   Condition 2: the viewing angle of each pixel Px is 10 degrees or    more, here, the viewing angle of the pixel Px is the light emitted    from the light-emitting element 3 included in the pixel Px and is    the maximum value of the angle formed between the traveling    direction of the light transmitting through the color filter and the    protective substrate 9 of the pixel Px and the Z axis direction.

In the embodiment, for convenience of description, by regarding theangle θo of the pixel Px as the viewing angle of the pixel Px, thecondition 2 described above is embodied as the following condition 2A.That is, in the embodiment, the electro-optical device 1 shall satisfythe condition 1 and the following condition 2A.

-   Condition 2A : the angle θo of each pixel Px is 10 degrees or more.

Hereinafter, in order to satisfy the above conditions 1 and 2A, theconditions to be satisfied by the interval Xw and the thickness Za areexamined.

First, the relationship between the thickness Za and the width Xa isexpressed by the following equation (1).

$\begin{matrix}{{Za} = \frac{Xa}{\tan\;\theta\; a}} & (1)\end{matrix}$

In the embodiment, it is assumed that the width Xa is less than half ofthe interval Xw. In this case, the equation (1) may be modified into thefollowing expression (2).

$\begin{matrix}{{Za} \leq \frac{Xw}{2\tan\;\theta\; a}} & (2)\end{matrix}$

Here, the absolute refractive index of the sealing layer 60 is Na, theabsolute refractive index of air is No, and the relative refractiveindex of the sealing layer 60 with respect to air is Noa(=Na÷No). Atthis time, from the Snell's law, the following equation (3) isestablished, and equation (4) may be obtained by modifying equation (3).

$\begin{matrix}{{{Na}*\sin\;\theta\; a} = {{No}*\sin\;\theta\; o}} & (3) \\{{Noa} = \frac{\sin\;\theta\; o}{\sin\;\theta\; a}} & (4)\end{matrix}$

In addition, tan θa may be expressed using sin θa as in the followingequation (5). Therefore, the equation (6) may be obtained from theequations (4) and (5).

$\begin{matrix}{{\tan\;\theta\; a} = \frac{\sin\;\theta\; a}{\sqrt{1 - {\sin^{2}\theta\; a}}}} & (5) \\{{\tan\;\theta\; a} = \frac{\sin\mspace{11mu}\theta\; o}{\sqrt{{Noa}^{2} - {\sin^{2}\theta\; o}}}} & (6)\end{matrix}$

Then, equation (7) is derived from equations (2) and (6).

$\begin{matrix}{{Za} \leq {\frac{Xw}{2\;\sin\;\theta\; o}\sqrt{{Noa}^{2} - {\sin^{2}\theta\; o}}}} & (7)\end{matrix}$

Here, when the ratio of the thickness Za with respect to the interval Xwis set to α(=Za÷Xw), the ratio α is expressed by the equation (8)obtained by modifying the equation (7).

$\begin{matrix}{\alpha \leq {\frac{1}{2\;\sin\;\theta\; o}\sqrt{{Noa}^{2} - {\sin^{2}\theta\; o}}}} & (8)\end{matrix}$

As described above, in order to satisfy the expression (7) or theexpression (8), it is possible to set the angle θo of the light Lxemitted from each pixel Px to an angle equal to or larger than a desiredangle by determining the thickness Za or the ratio α.

By the way, in general, the relative refractive index Noa of the sealinglayer 60 is in the range of “1.4≤Noa≤1.9”. In the embodiment, therelative refractive index Noa of the sealing layer 60 is set to “1.8”.In this case, the ratio a for satisfying the condition 2A is “5.1” orless. Therefore, in order to make the angle θo 10 degrees or more,“α≤5”, that is, the thickness Za is set to 5 times or less the intervalXw. Then, in the embodiment, since it is necessary to satisfy thecondition 1 (Xw≤1.5 μm), the thickness Za is “Za≤7.5 μm”.

In addition, in the embodiment, the thickness Zc of the color filter isdetermined so as to be in the range of “0.5*Xw≤Zc≤3.0*Xw”. Furthermore,in the embodiment, the thickness ZcR, the thickness ZcG, and thethickness ZcB are determined so as to satisfy “ZcG<ZcB<ZcR”. Therefore,in the embodiment, the thickness Zt is 8 times or less the interval Xwand is determined so as to satisfy “ZtG<ZtB<ZtR”.

In the embodiment, the angle θo indicating the traveling direction ofthe light Lx emitted from the end portion of the light-emitting element3 included in the pixel Px is regarded as the viewing angle of the pixelPx. However, in reality, light emitted from a position other than theend portion of the light-emitting element 3 included in the pixel Px maytransmit through the color filter and the protective substrate 9.Therefore, the viewing angle sometimes becomes larger than the angle θoby; for example, “2 degrees”. Therefore, the condition 2 may be embodiedas the following condition 2B.

-   Condition 2B: the angle θo of each pixel Px is 8 degrees or more.

In a case where the relative refractive index Noa is “1.8”, the ratio afor satisfying the condition 2B is “6.4” or less. Therefore, in order toset the viewing angle of each pixel Px to 10 degrees or more, “α≤6”,that is, the thickness Za may be 6 times or less the interval Xw. Then,in this case, in order to satisfy the condition 1 (Xw≤1.5 μm), thethickness Za is “Za≤9 μm”. In addition, in this case, the thickness Ztis 9 times or less the interval Xw and is determined so as to satisfy“ZtG<ZtB<ZtR”.

4. Method for Manufacturing Electro-Optical Device

Hereinafter, an example of a method for manufacturing theelectro-optical device 1 according to the embodiment will be describedwith reference to FIGS. 6 to 9.

FIG. 6 is a flowchart for explaining an example of a method formanufacturing the electro-optical device 1. As shown in FIG. 6, themethod for manufacturing the electro-optical device 1 includes formingthe reflective layer 51 on the substrate 50 (S1), forming the distanceadjusting layer 52 on the reflective layer 51 (S2), forming thelight-emitting layer 30 that has the light-emitting element 3R, thelight-emitting element 3G, and the light-emitting element 3B on thedistance adjusting layer 52 (S3); forming the sealing layer 60 on thelight-emitting layer 30 (S4), forming the color filter 8G on the +Z sideof the light-emitting element 3G of the light-emitting layer 30 on theupper sealing layer 63 of the sealing layer 60 (S5), forming the colorfilter 8B on the +Z side of the light-emitting element 3B that has thelight-emitting layer 30 on the upper sealing layer 63 and on the colorfilter 8G (S6), forming the color filter 8R on the +Z side of thelight-emitting element 3R that has the light-emitting layer 30 on theupper sealing layer 63, the color filter 8G, and the color filter 8B(S7), and forming the adhesive layer 90 on the color filter layer 8 andbonding the element substrate 5 and the protective substrate 9 with theadhesive layer 90 (S8).

An example of steps S5 to S7, which is a manufacturing process of thecolor filter layer 8 out of the above steps S1 to S8, will be describedbelow.

In step S5, first, a photosensitive resin material containing a greencoloring material is applied onto the upper sealing layer 63 by a spincoating method and dried, whereby a green photosensitive resin layer isformed. Next, a portion of the green photosensitive resin layer formingthe color filter 8G is irradiated with light and exposed, and adeveloping solution or the like is discharged to the photosensitiveresin layer, whereby the unexposed photosensitive resin layer isremoved. Thereafter, by burning and curing the green photosensitiveresin layer, as shown in FIG. 7, the color filter 8G is formed on theupper sealing layer 63.

In the step S6, first, a photosensitive resin material containing a bluecoloring material is applied onto the upper sealing layer 63 and thecolor filter 8G by the spin coat method and dried, whereby a bluephotosensitive resin layer is formed. Next, a portion of the bluephotosensitive resin layer forming the color filter 8B is irradiatedwith light and exposed, and a developing solution or the like isdischarged to the photosensitive resin layer, whereby the unexposedphotosensitive resin layer is removed. Thereafter, by burning and curingthe blue photosensitive resin layer, as shown in FIG. 8, the colorfilter 8B is formed on the upper sealing layer 63 and the color filter8G.

In the step S7, first, a photosensitive resin material containing a redcoloring material is applied onto the upper sealing layer 63, the colorfilter 8G, and the color filter 8B by the spin coat method and dried,whereby a red photosensitive resin layer is formed. Next, a portion ofthe red photosensitive resin layer forming the color filter 8R isirradiated with light and exposed, and a developing solution or the likeis discharged to the photosensitive resin layer, whereby the unexposedphotosensitive resin layer is removed. Thereafter, by burning and curingthe red photosensitive resin layer, as shown in FIG. 9, the color filter8B is formed on the upper sealing layer 63, the color filter 8G, thecolor filter 8B, and the color filter 8R.

5. Effect of Embodiment

As described above, in the embodiment, the interval Xw between thelight-emitting elements 3 is set to 1.5 μm or less and the thickness Zaof the sealing layer 60 between the light-emitting element 3 and thecolor filter layer 8 is set to 5 times or less or 6 times or less theinterval Xw. Therefore, in the electro-optical device 1 according to theembodiment, it is possible to secure a viewing angle of 10 degrees ormore in each pixel Px. That is, according to the embodiment, even whenthe pixels Px are provided at a narrow pitch, it is possible to secure asufficient viewing angle.

B. MODIFICATION EXAMPLE

Each of the above embodiments may be variously modified. Specificmodification embodiments are exemplified below. Two or more embodimentsarbitrarily selected from the following examples may be appropriatelymerged within a range not mutually contradictory. With respect toelements whose functions and functions are the same as those of theembodiment in the modification examples described below, the referencenumerals referred to in the above description are used, and the detaileddescription thereof will be appropriately omitted,

Modification Example 1

In the above embodiment, in the display unit 12, the color filter layer8 is formed so as to cover the entirety of the sealing layer 60, but theinvention is not limited to such an aspect, and in the display unit 12,a convex pattern 7 (an example of “convex portion”) may be formedbetween the sealing layer 60 and the color filter layer 8.

FIG. 10 is a plan view showing an example of a schematic structure ofthe display unit 12 according to a modification example 1.

As shown in FIG. 10, in the display unit 12 according to the presentmodification example, a plurality of convex patterns 7 extending in theY axis direction are provided between two light-emitting elements 3adjacent in the X axis direction. More specifically, in the display unit12 according to the modification example, (N−1) columns of convexpatterns 7 are provided so as to divide the N columns of pixels Px fromthe first column to the N-th column from each other. However, the convexpattern 7 may be provided on one or both of the −X side than the firstrow and the +X side than the N-th column.

FIG. 11 is an example of a partial cross-sectional view taken along theline XI-XI in FIG. 10 of the display unit 12 according to modificationexample 1, in which the cross section of the pixel PxR, the crosssection of the pixel PxG, and the cross section of the pixel PxB areincluded.

The convex pattern 7 is a transparent constituent element formed on thesealing layer 60 and includes a flat bottom surface 71 in contact withthe sealing layer 60 and a curved upper surface 72 in contact with thecolor filter layer 8. The shape of the convex pattern 7 shown in FIG. 11is an example, and the upper surface 72 of the convex pattern 7 may be apolyhedron or a shape having a corner.

The convex pattern 7 is formed using a transparent photosensitive resinmaterial not containing a coloring material, for example, an acrylicresin. That is, the photosensitive resin material used as the materialof the convex pattern 7 is the same material as the main material of thecolor filter layer 8.

In this modification example, as shown in FIG. 11, the color filter 8Gis formed on the upper sealing layer 63 and on the convex pattern 7. Inaddition, the color filter 8B is formed on the upper sealing layer 63,the convex pattern 7, and the color filter 8G. In addition, the colorfilter 8R is formed on the upper sealing layer 63, the convex pattern 7,the color filter 8G, and the color filter 8B.

As described above, in this modification example, the convex pattern 7is provided between the sealing layer 60 and the color filter layer 8.As described above, the convex pattern 7 is mainly formed of aphotosensitive resin material not containing a coloring material.Generally, the bonding strength of a resin material not containing acoloring material is stronger than the bonding strength of a resinmaterial containing a coloring material. Therefore, as in thismodification example, in a case where a constituent element(hereinafter, referred to as a “constituent on the sealing layer”)formed on the sealing layer 60 includes the convex pattern 7 containingno coloring material in addition to the color filter layer 8 containinga coloring material, the bonding strength of the constituent on thesealing layer to the sealing layer 60 may be increased as compared withthe case where the sealing layer 60 is formed only from the color filterlayer 8 containing a coloring material. Therefore, according to thismodification example, in the manufacturing process of theelectro-optical device 1 or the like, it is possible to reduce thepossibility that the components on the sealing layer such as the colorfilter layer 8 peel off from the sealing layer 60.

In addition, in this modification example, the convex pattern 7 and thecolor filter layer 8 are formed using the same photosensitive resinmaterial as a main component. Generally, the bonding strength betweenthe constituent elements having the same main constituent is strongerthan the bonding strength between constituent elements having differentmain constituents. Therefore, the bonding strength between the colorfilter layer 8 and the convex pattern 7 is stronger than the bondingstrength between the color filter layer 8 and the sealing layer 60.Therefore, as in this modification example, since the constituent on thesealing layer has the convex pattern 7, it is possible to reduce thepossibility that the color filter layer 8 peels off from the sealinglayer 60.

In addition, in this modification example, the convex pattern 7 isformed so that the upper surface 72 is a curved surface. Then, in a casewhere the upper surface 72 of the convex pattern 7 is a curved surface,the adhesiveness between the color filter layer 8 formed on the uppersurface 72 and the convex pattern 7 is higher as compared with the easewhere the upper surface 72 of the convex pattern 7 has a shape having acorner like a polyhedron. Therefore, according to this modificationexample, it is possible to strengthen the bonding strength of the convexpattern 7 and the color filter layer 8 as compared with the case wherethe upper surface 72 of the convex pattern 7 has a corner. In this way,it is possible to reduce the possibility that the color filter layer 8peels off from the convex pattern 7 and the sealing layer 60.

Modification Example 2

In the embodiment and the modification example described above, afterforming the color filter 8G, the color filter 8B is formed, and afterforming the color filter 8B, the color filter 8R is formed, but theinvention is not limited to such an embodiment, and the formation orderof the color filters 8R, 8G, and 8B is arbitrary.

Modification Example 3

In the embodiment and the modification example described above, greenlight is used as an example of light in the first wavelength region, andblue light or red light is used as an example of light in the secondwavelength region, but the invention is not limited to such anembodiment, and the light in the first wavelength region and the lightin the second wavelength region may be visible light having differentcolors. Then, the first resonator including the first light-emittingelement may be an optical resonance structure that emits light in thefirst wavelength region, and the second resonator including the secondlight-emitting element may be a light resonance structure that emitslight in the second wavelength region. In addition, the first colorfilter may be a color filter that transmits light in the firstwavelength region, and the second color filter may be a color filterthat transmits light in the second wavelength region.

Modification Example 4

In the embodiment and the modification example described above, as a“condition 1”, the interval Xw between adjacent light-emitting elements3 is set to 1.5 μm or less, but the invention is not limited to such anembodiment, and the interval Xw may be set to 1.0 μm or less as the“condition 1”, or the interval Xw may be set to 0.7 μm or less as the“condition 1”. For example, in a case where the interval Xw is 1.0 μm orless, the thickness Za needs to be at least 6.0 μm or less, preferably5.0 μm or less. In a case where the interval Xw is 0.7 μm or less, thethickness Za needs to be at least 4.2 μm or less, preferably 3.5 μm orless.

The interval XwRG, the interval XwGB, and the interval XwBR may bedifferent from each other.

C. APPLICATION EXAMPLE

The electro-optical device 1 according to the embodiment and themodification examples described above may be applied to variouselectronic apparatuses. Hereinafter, the electronic apparatus accordingto the aspect of the invention will be described.

FIG. 12 is a perspective view showing an appearance of a head mounteddisplay 300 as an electronic apparatus employing the electro-opticaldevice 1 of the aspect of the invention. As shown in FIG. 12, the headmounted display 300 includes a temple 310, a bridge 320, a projectionoptical system 301L, and a projection optical system 301R. Then, in FIG.12, the electro-optical device I (not shown) for the left eye isprovided behind the projection optical system 301L, and theelectro-optical device 1 (not shown) for the right eye is providedbehind the projection optical system 301R.

FIG. 13 is a perspective view of a portable personal computer 400employing the electro-optical device 1. The personal computer 400includes the electro-optical device 1 for displaying various images, anda main body unit 403 provided with a power switch 401 and a keyboard402.

As an electronic apparatus to which the electro-optical device 1according to the aspect of the invention is applied, in addition to theapparatuses exemplified in FIGS. 12 and 13, it is also possible to use aportable telephone, a smartphone, a personal digital assistant (PDA), adigital still camera, a television, a video camera, a car navigationdevice, an in-vehicle display device (instrument panel), an electronicnotebook, an electronic paper, a calculator, a word processor, aworkstation, a video phone, a POS terminal, and the like. Furthermore,the electro-optical device 1 according to the invention may be appliedas a display unit provided in an electronic apparatus such as a printer,a scanner, a copying machine, and a video player.

The entire disclosure of Japanese Patent Application No. 2016-223711,filed Nov. 17, 2016 is expressly incorporated by reference herein.

What is claimed is:
 1. An electro-optical device comprising: a firstpixel that includes a first light-emitting element, and that displays afirst color; a second pixel that includes a second light-emittingelement, and that displays a second color different from the firstcolor, and the second pixel adjacent to the first pixel; an insulatingfilm formed between the first light-emitting element and the secondlight-emitting element; a light-emitting layer including: the firstlight-emitting element; and the second light-emitting element; and acolor filter layer including: a first color filter provided on the firstlight-emitting element; a second color filter provided on the secondlight-emitting element; wherein the first color filter has the firstcolor, the second color filter has the second color, an inter-elementdistance between the first light-emitting element and the secondlight-emitting element is 1.5 μm or less, and a thickness of layerbetween the light-emitting layer and the color filter layer is 6 timesor less the inter-element distance.
 2. An electro-optical devicecomprising: a light-emitting layer that has a first light-emittingelement and a second light-emitting element adjacent to each other; acolor filter layer that has a first color filter formed on the firstlight-emitting element and a second color filter formed on the secondlight-emitting element; a first pixel including the first light-emittingelement; and a second pixel including the second light-emitting element,wherein the first color filter is same color as light emitted from thefirst pixel, the second color filter is same color as light emitted fromthe second pixel, the first color filter has different color from thesecond color filter, an inter-element distance between the firstlight-emitting element and the second light-emitting element is 1.5 μmor less, and a thickness of layer between the light-emitting layer andthe color filter layer is 6 times or less the inter-element distance. 3.An electro-optical device comprising: a light-emitting layer including:a first light-emitting element emitting light having a first wavelengthregion, and a second light-emitting element that emitting light having asecond wavelength region different from the first wavelength region, andthat adjacent to the first light-emitting element; and a color filterlayer that has a first color filter and a second color filter, whereinthe first color filter is same color as color of light in the firstwavelength region, the second color filter is same color as color oflight in the second wavelength region, an inter-element distance betweenthe first light-emitting element and the second light-emitting elementis 1.5 μm or less, and a thickness of layer between the light-emittinglayer and the color filter layer is 6 times or less the inter-elementdistance.
 4. The electro-optical device according to claim 2, furthercomprising: an insulating film formed between the first light-emittingelement and the second light-emitting element.
 5. The electro-opticaldevice according to claim 3, further comprising: an insulating filmformed between the first light-emitting element and the secondlight-emitting element.
 6. The electro-optical device according to claim1, wherein the insulating film is disposed so as not to overlap with thefirst pixel and the second pixel, in plan view.
 7. The electro-opticaldevice according to claim 4, wherein the insulating film is disposed soas not to overlap with the first pixel and the second pixel, in planview.
 8. The electro-optical device according to claim 5, wherein theinsulating film is disposed so as not to overlap with the firstlight-emitting element and the second light-emitting element, in planview.
 9. The electro-optical device according to claim 1, wherein thefirst color is green, and the second color is blue or red.
 10. Theelectro-optical device according to claim 2, wherein the first pixelemitted green light, and the second pixel emitted blue light or redlight.
 11. The electro-optical device according to claim 3, whereincolor of light in the first wavelength region is green, and color oflight in the second wavelength region is blue or red.
 12. Theelectro-optical device according to claim 1, further comprising: afilling layer that covers the color filter layer; and a protectivesubstrate that covers the filling layer, wherein a maximum value of anangle that is formed by a traveling direction of light emitted from thefirst light-emitting element and transmitted through the protectivesubstrate after transmitting through the first color filter and thefilling layer, and a direction perpendicular to the protective substrateis 10 degrees or more.
 13. The electro-optical device according to claim2, further comprising: a filling layer that covers the color filterlayer; and a protective substrate that covers the filling layer, whereina maximum value of an angle that is formed by a traveling direction oflight emitted from the first light-emitting element and transmittedthrough the protective substrate after transmitting through the firstcolor filter and the filling layer, and a direction perpendicular to theprotective substrate is 10 degrees or more.
 14. The electro-opticaldevice according to claim 3, further comprising: a filling layer thatcovers the color filter layer; and a protective substrate that coversthe filling layer, wherein a maximum value of an angle that is formed bya traveling direction of light emitted from the first light-emittingelement and transmitted through the protective substrate aftertransmitting through the first color filter and the filling layer, and adirection perpendicular to the protective substrate is 10 degrees ormore.
 15. The electro-optical device according to claim 1, furthercomprising: a filling layer that covers the color filter layer, whereina thickness of layer between the light-emitting layer and the fillinglayer is 9 times or less the inter-element distance.
 16. Theelectro-optical device according to claim 2, further comprising: afilling layer that covers the color filter layer, wherein a thickness oflayer between the light-emitting layer and the filling layer is 9 timesor less the inter-element distance.
 17. The electro-optical deviceaccording to claim 3, further comprising: a filling layer that coversthe color filter layer, wherein a thickness of layer between thelight-emitting layer and the filling layer is 9 times or less theinter-element distance.